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vraesch

DIY recharge of Sub Zero 532

13 posts in this topic

My Sub Zero is barely cooling and has ice in left corner of fridge. I'm guessing freon leak, probably in the evaporator. This unit is tagged to use R134a. My question is can i add R134a to this myself? I do this to my car using the small bottles with built in pressure gauge and that seems to work fine. I'm guessing that the brass fill valve on the Sub Zero is on the low pressure side of the compressor as well, however the schrader valve is the screw on variety vs the push on type on my car. Is this feasible and if so has anyone done this? I want to do this to see how long it takes to leak down again. If every six months,then i might consider nursing it along otherwise i'll need to call in someone to replace the evaporator and evacuate and recharge.

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Need appliance parts? Call 877-803-7957 now!

:yikes:

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Sorry. It's just that adding refrigerant to a SEALED system is an art. It's not quite as simple as hooking up a can of refrigerant to a Schrader valve....especially if there is no valve.

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I understand, however there IS a Schraeder valve so I don't really consider this a "sealed" system. I just want to know if automotive technology will work on this unit. It certainly is easy enough ( and totally legal) to add r134a to a car ac system.

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... It certainly is easy enough ( and totally legal) to add r134a

.. not legal in most (if not all) States, without fixing the leak.

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If your choice is between trying it and dumping it, and you don't mind taking the risk of contaminating your system. Give it a try. But I don't think you will find anyone here that would advise you to do it. Especially if you want to have it repaired professionally in the future. Subject to legal issues GMF RegUS notes.

Edited by DurhamAppliance

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btw has the fridge been serviced before? And are you out of the warranty period?

Edited by DurhamAppliance

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the fridge has not been serviced before (except when i replaced a malfunctioning thermostat) and is about 16 years old so i assume it is out of warranty - sorry to bother with a silly question, but with the economy the way it is, saving every dollar counts. Given the responses so far i'll probably just let it to the pro's. Anyone recommend a good SZ tech in the Northern side of Atlanta?

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Your question is definitely not silly. Just scary. Especially with a fridge as expensive as a Sub-Zero

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Also worth a call to SZ.....this is a known defect in their product and I think there is a good chance they will provide you with the parts free of charge. Worth a try and you never know till ya ask...also they will have a list of auth. Servicers in your area.

phone # should be on the tag...

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just a note:

SubZeros have a 12yr sealed system parts warranty...

you pay for labor

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NO! Don't, the pressures are very different from a car 134a system. I have seen a few of these mechanic freon refills over the last few years and most of them are severely overcharged. Durham is right, it takes a lot more than a colored pressure gauge to figure out how much you would need anyway.

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